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-rw-r--r--djangorestframework/serializer.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/djangorestframework/serializer.py b/djangorestframework/serializer.py
index 3f05903b..5d77c461 100644
--- a/djangorestframework/serializer.py
+++ b/djangorestframework/serializer.py
@@ -182,7 +182,7 @@ class Serializer(object):
else:
depth = self.depth - 1
- if any([obj is elem for elem in self.stack]):
+ if obj in self.stack:
return self.serialize_recursion(obj)
else:
stack = self.stack[:]